English verb conjugation
COULD RULE

Regular verb: rule - ruled - ruled

Affirmation

Simple form	V-ing form
I could rule you could rule she could rule we could rule you could rule they could rule	I could be ruling you could be ruling she could be ruling we could be ruling you could be ruling they could be ruling
Perfect	V-ing perfect
I could have ruled you could have ruled she could have ruled we could have ruled you could have ruled they could have ruled	I could have been ruling you could have been ruling she could have been ruling we could have been ruling you could have been ruling they could have been ruling

Negation

Simple form	V-ing form
I could not rule you could not rule she could not rule we could not rule you could not rule they could not rule	I could not be ruling you could not be ruling she could not be ruling we could not be ruling you could not be ruling they could not be ruling
Perfect	V-ing perfect
I could not have ruled you could not have ruled she could not have ruled we could not have ruled you could not have ruled they could not have ruled	I could not have been ruling you could not have been ruling she could not have been ruling we could not have been ruling you could not have been ruling they could not have been ruling

Interrogative form

Simple form	V-ing form
could I rule? could you rule? could she rule? could we rule? could you rule? could they rule?	could I be ruling? could you be ruling? could she be ruling? could we be ruling? could you be ruling? could they be ruling?
Perfect	V-ing perfect
could I have ruled? could you have ruled? could she have ruled? could we have ruled? could you have ruled? could they have ruled?	could I have been ruling? could you have been ruling? could she have been ruling? could we have been ruling? could you have been ruling? could they have been ruling?

Interro-negative form

Simple form	V-ing form
could I not rule? could you not rule? could she not rule? could we not rule? could you not rule? could they not rule?	could I not be ruling? could you not be ruling? could she not be ruling? could we not be ruling? could you not be ruling? could they not be ruling?
Perfect	V-ing perfect
could I not have ruled? could you not have ruled? could she not have ruled? could we not have ruled? could you not have ruled? could they not have ruled?	could I not have been ruling? could you not have been ruling? could she not have been ruling? could we not have been ruling? could you not have been ruling? could they not have been ruling?